<p>i see it a lot.</p>
<p>Bump is just a way to get a thread back up to the top of the list of threads where it will be visible. If no one has responded to the post or thread, someone might do a "bump" post to elevate it.</p>
<p>Bring Up My Post. it's a way to create attention, since when you post something new, it will automatically go up the list. you don't have to actually put "bump", you can even put a smiley and the thread will still go up since it's a new post. Bump is just to let others know that you are wanting to attract attention to that particular thread.</p>
<p>But don't bump too often, because it irritates people. Ideally, one should only bump once every 12 or so hours, but in CC, because the volume of postings is large, in 12 hours your thread can go somewhere on the 3rd or 4th page, so people sometimes bump in a few hours' time when there's no reply.</p>